body {
    background: #faf9f6;
    font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', Arial, sans-serif;
    color: #222;
    margin: 0;
    padding: 0;
    min-height: 100vh;
    letter-spacing: 0.01em;
}
.site-header {
    width: 100%;
    background: #fff;
    box-shadow: 0 2px 12px rgba(0,0,0,0.03);
    padding: 0;
    position: sticky;
    top: 0;
    z-index: 10;
}
.header-inner {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
    padding: 0 32px;
}
.logo {
    display: flex;
    align-items: center;
    font-weight: 700;
    font-size: 1.5rem;
    letter-spacing: 1px;
}
.logo-icon {
    font-size: 1.7rem;
    margin-right: 8px;
}
.logo-text {
    color: #ff6a1a;
    font-weight: 700;
    font-size: 1.3rem;
}
.nav {
    display: flex;
    gap: 28px;
}
.nav-link {
    color: #888;
    text-decoration: none;
    font-size: 1.05rem;
    font-weight: 500;
    transition: color 0.2s;
    padding: 2px 0;
    border-bottom: 2px solid transparent;
}
.nav-link.active,
.nav-link:hover {
    color: #ff6a1a;
    border-bottom: 2px solid #ff6a1a;
}

/* 极致优化的主卡片样式 */
.center-card {
    width: 96%;
    max-width: 720px;
    min-width: 0;
    margin: 72px auto 0 auto;
    background: #fff;
    border-radius: 28px;
    box-shadow: 0 8px 40px 0 rgba(0,0,0,0.10), 0 1.5px 4px 0 rgba(0,0,0,0.03);
    padding: 54px 38px 38px 38px;
    text-align: center;
    transition: box-shadow 0.2s;
    position: relative;
}
.main-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: #222;
    margin-bottom: 14px;
    letter-spacing: 0.01em;
    line-height: 1.18;
}
.highlight {
    color: #ff6a1a;
    font-weight: 700;
}
.sub-title {
    color: #666;
    font-size: 1.15rem;
    margin-bottom: 36px;
    font-weight: 400;
    line-height: 1.7;
}
.input-row {
    display: flex;
    gap: 12px;
    margin-bottom: 22px;
}
.input-row input {
    flex: 1;
    padding: 15px 20px;
    border: 1.5px solid #e0e0e0;
    border-radius: 12px;
    font-size: 1.13rem;
    background: #fafbfc;
    transition: border 0.2s, box-shadow 0.2s;
    font-family: inherit;
    box-shadow: 0 1px 2px rgba(0,0,0,0.01);
}
.input-row input:focus {
    border-color: #ff6a1a;
    outline: none;
    background: #fff;
    box-shadow: 0 2px 8px rgba(255,106,26,0.08);
}
.input-row button {
    background: #ff6a1a;
    color: #fff;
    border: none;
    border-radius: 12px;
    padding: 0 30px;
    font-size: 1.13rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s, box-shadow 0.2s;
    box-shadow: 0 2px 8px rgba(255,106,26,0.10);
    height: 50px;
    letter-spacing: 0.5px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.input-row button:hover {
    background: #e65a00;
}
.result-card {
    margin-top: 32px;
    text-align: left;
    background: #f7f7fa;
    border-radius: 16px;
    padding: 26px 20px;
    min-height: 60px;
    font-size: 1.08rem;
    color: #333;
    word-break: break-all;
    box-shadow: 0 1.5px 6px rgba(0,0,0,0.04);
    transition: box-shadow 0.2s;
}
.site-footer {
    text-align: center;
    color: #bbb;
    font-size: 1em;
    margin: 64px 0 18px 0;
    letter-spacing: 0.2px;
}
@media (max-width: 700px) {
    .center-card {
        padding: 28px 8px 18px 8px;
        max-width: 99vw;
        margin-top: 32px;
    }
    .main-title { font-size: 1.35rem; }
    .sub-title { font-size: 1.01rem; }
    .input-row button { padding: 0 12px; font-size: 0.98rem; height: 44px; }
    .result-card { padding: 16px 6px; }
    .header-inner { padding: 0 10px; }
}
.video-detail-section {
    margin-top: 38px;
    background: #fff;
    border-radius: 22px;
    box-shadow: 0 4px 24px rgba(0,0,0,0.07);
    padding: 32px 28px 28px 28px;
    text-align: left;
    transition: box-shadow 0.2s;
    width: 96%;
    max-width: 720px; /* 与.center-card保持一致 */
    margin-left: auto;
    margin-right: auto;
}
.detail-title {
    font-size: 1.35rem;
    font-weight: 700;
    color: #222;
    margin-bottom: 18px;
    letter-spacing: 0.01em;
}
.detail-content {
    display: flex;
    flex-direction: row;
    gap: 28px;
    align-items: flex-start;
}
.detail-left {
    min-width: 120px;
    max-width: 140px;
    flex-shrink: 0;
}
.detail-cover {
    max-width: 140px;
    width: 100%;
}
.detail-right {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 14px;
}
.detail-block {
    margin-bottom: 18px;
    padding-bottom: 8px;
    border-bottom: 1px solid #f0f0f0;
}
.detail-block:last-child {
    border-bottom: none;
}
.detail-row {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 1.08rem;
    line-height: 1.7;
}
.detail-label {
    color: #888;
    min-width: 60px;
    font-weight: 600;
}
.detail-value {
    color: #222;
    word-break: break-all;
    flex: 1;
}
.tag {
    display: inline-block;
    background: #f7f7fa;
    color: #ff6a1a;
    border-radius: 4px;
    padding: 2px 10px;
    margin-right: 8px;
    margin-bottom: 4px;
    font-size: 0.98em;
    font-weight: 500;
    letter-spacing: 0.5px;
}
.detail-row .detail-value .tag {
    margin-bottom: 4px;
}
.detail-row .detail-value {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
}
.detail-row.stats .detail-value {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
}
@media (max-width: 700px) {
    .detail-content {
        flex-direction: column;
        gap: 10px;
    }
    .detail-left, .detail-cover {
        max-width: 100%;
    }
    .detail-block {
        margin-bottom: 10px;
        padding-bottom: 4px;
    }
    .tag {
        font-size: 0.92em;
        padding: 2px 6px;
        margin-right: 4px;
    }
}
.detail-basic-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px 24px;
    margin-bottom: 12px;
}
@media (max-width: 700px) {
    .detail-basic-grid {
        grid-template-columns: 1fr;
        gap: 8px 0;
    }
}
.detail-block {
    margin-bottom: 20px;
    padding-bottom: 8px;
    border-bottom: 1px solid #f0f0f0;
}
.detail-block:last-child {
    border-bottom: none;
}
.tag {
    display: inline-block;
    background: #f7f7fa;
    color: #ff6a1a;
    border-radius: 4px;
    padding: 2px 10px;
    margin-right: 8px;
    margin-bottom: 4px;
    font-size: 0.98em;
    font-weight: 500;
    letter-spacing: 0.5px;
}
@media (max-width: 700px) {
    .detail-block {
        margin-bottom: 12px;
        padding-bottom: 4px;
    }
    .tag {
        font-size: 0.92em;
        padding: 2px 6px;
        margin-right: 4px;
    }
}